I've frequently bought soda from here because it's just a few blocks from my work. The locksmith shop actually does stock it (I caught them once!) and keep it operational. As for that Mystery button, I've gotten everything from Orange Fanta to Diet Dr. Pepper. It's super fun to take friends visiting from out of town there. And if you don't like what you got in the mystery, you can just get another one, because chances are, it won't be the same.